NON-LIGAND-ASSISTED PEROVSKITE DOPED MULTI-EMISSION MATERIAL AND PREPARATION METHOD THEREFOR

摘要

A non-ligand-assisted perovskite doped multi-emission material. A preparation method therefor comprises the following steps: 1) dissolving a polymer in an organic solvent so as to obtain a first solution containing the polymer; 2) adding a halide salt to the first solution, and mixing same until uniform so as to obtain a second solution; and 3) vacuum drying the second solution to obtain a perovskite doped material, wherein the halide salt in step 2) is a composition of a main inorganic halide salt A, a doping halide salt, and a main inorganic halide salt B, or a composition of the main inorganic halide salt A, the doping halide salt, and an organic amine halide salt. The preparation method is simple, low in cost, and suitable for large-area production, and the crystallinity of the material is good, the dispersity of nanoparticles is good, and dual-band emission is effectively achieved.